Instructions to Authors

Types of contributions
Scientific and technical papers, and review articles are the main contributions accepted. Moreover, the journal will also publish short notes, limited to a length of four pages including references; technical notes dedicated to the presentation of current research activity or significant original data, and book reviews. In the case of articles of strictly regional or local interest, the contribution should be limited to the essentials.

Submission of papers
The manuscript should not have been published or submitted for publication elsewhere. Submission of a multi-authored manuscript implies the consent of all participating authors. Manuscripts (one original and three copies) should be sent to the Technical Editor at the address given on the front inner cover page. An e-mail address is also available for any assistance: bgta@ogs.trieste.it.

Authors are encouraged to submit the accepted text in both a hardcopy and an electronic version (e.g., a disk, or anonymous ftp at bgta.ogs.trieste.it). Files must correspond exactly to the hardcopy and may include figures. The operating system, the word- or text-processor, and picture format used to save pictures should be specified clearly. An ASCII version of the manuscript should be included as well. More detailed guidelines and further information are available from the publisher, at the e-mail address specified above.

Reviewing process
Before publication, each manuscript will undergo a reviewing process. The Editor-in-Chief will assign the manuscript to an Associate Editor who is directly in charge of the reviewing process of the manuscript and will send the manuscript for evalutation to reviewers. The final decision on publication will be made by the Editor-in-Chief. Editing and styling will be done at the discretion of the publisher.

Manuscript preparation
All papers must be written in English, in double-spaced typing on pages of uniform size (preferably A4); ample margins should be left. Papers should not normally exceed 20 printed pages, including figures and tables. The manuscript should be written in maximum consistency with the style and layout of the journal.

The title of the paper should unambiguously reflect its contents. A suggestion for an abbreviated running title should be given.

The author's name(s) and full postal address(es) should follow the title. Where an author has moved permanently or temporarily to a new address, this should be indicated as a footnote on the first page. An author to contact should be specified, if several authors are involved.

Each paper must be provided with an Abstract of about 100-150 words, describing concisely the purpose and results of the paper.

If the paper was presented at a meeting, mention should be made thereof in the acknowledgements.

The SI system should be used for all scientific and laboratory data: if it is necessary to quote other units, these should be added in parentheses. Abbreviations for units should follow the suggestions of the American Institute of Physics (AIP) Style Manual. Where abbreviations are likely to cause ambiguity or to not be readily understood by an international readership, units should be written in full. The full stop should not be included in abbreviations, e.g., m (not m.), ppm (not p. p. m.), "%" and "/" should be used in preference of "per cent" and "per".

Footnotes should be avoided, especially if they contain information which could equally well be included in the text.

Computer programs, if any, should preferably be given as a digital ASCII file; otherwise they will be reproduced photographically from the original printout.

The use of proprietary names should be avoided. Papers essentially of an advertising nature will not be accepted.

References
should be cited at the appropriate point in the text with the author's name followed by the year of publication; thus, "according to Finetti (1982)" or "as shown in an earlier paper (Marussi, 1983)". When there are two or more papers by the same author published in the same year, the distinguishing letters, a, b, etc. should be added to the year. The name of two coauthors must be linked by "and"; for three or more, the first author's name must be followed by "et al.". References should be listed together at the end of the paper and arranged alphabetically without numbering. Only cited references should be included in the list. Examples of layout of references are given below.

Slejko D., Caporali A., Stirling M. and Barba S.; 2010: Occurrence probability of moderate to large earthquakes in Italy based on new geophysical methods. J. Seismol., 14, 27-51, DOI 10.1007/s10950-009-9175-x.

Richter C.F.; 1978: Elementary Seismology. W. H. Freeman and Company, San Francisco, 768 pp.

Rikitake T.; 1975: Dilatancy model and empirical formulas for an earthquake area. In: Wyss M. (ed), Earthquake prediction and rock mechanics, Birkhuser Verlag, Basel und Stuttgart, pp. 141-147.

Garcia J. and Slejko D.; 2009: Scenario earthquakes for tsunami generation in the Ionian Sea. In: Slejko D. e Rebez A. (eds), Gruppo Nazionale di Geofisica della Terra Solida, 28° Convegno Nazionale, Riassunti estesi delle comunicazioni. Stella Arti Grafiche, Trieste, pp. 375-380.

Garcia J., Slejko D., Alvarez L., Peruzza L. and Rebez A.; 2003: Probabilistic seismic hazard assessment for Cuba. In: Slejko D. (ed), Gruppo Nazionale di Geofisica della Terra Solida, Atti del 21° Convegno nazionale, CD-Rom, Prospero, Trieste, file 04.20.

Musson R.: A short history of intensity and intensity scales. <www.earthquakes.bgs.ac.uk/hazard/history_intensity.htm>.

Montaldo V.; 2005: Seismic hazard and uncertainties assessment in north-easternItaly: comparing approches with varied geological and seismological background. PH.D. Thesis in Geological Sciences and Geo-Tecnologies for Environment and Territory, XVIII cycle, Università degli Studi di Milano - Bicocca, 146 pp.

Carulli G.B.; 2006: Carta geologica del Friuli Venezia Giulia. SELCA, Firenze.

Koulakov I.; 2011: High-frequency P and S velocity anomalies in the upper mantle beneath Asia from inversion of worldwide traveltime data. J. Geophys. Res., 116, B04301, 22 pp., doi:10.1029/2010JB007938.

Drawings
The original and three copies, which may be of reduced size, of each illustration should be provided. Drawings may be submitted in any medium providing that they are of good quality and sharp contrast. Poor illustrations will be refused. Color illustrations are accepted, but their printing cost will be charged to the authors.

The size of the drawings should be approximately 1.5 times, and never more then 2.5 times, the final size. Line weight and lettering should be selected accordingly. Size of characters should be such that after reduction the smallest character will not be less than 1.5 mm. Photographs should be submitted as contrasting prints on glossy paper.

Numbering and captioning
Each illustration should be given a figure number in Arabic numerals. Each table should be given a table number in Arabic numerals. The number, as well as the name(s) of the author(s) of the paper, should be written on the reverse side of each illustration and table.

Figures and tables must have a caption or title which is referred to in a list attached to the manuscript. Captions should never be incorporated in the drawings. Scales should be indicated graphically and not numerically.

Equations should all be numbered sequentially with Arabic numbers, and refered to within the text by Eq. or Eqs. followed by the pertinent number in brackets.

Proofs
The (contact) author will receive a set of proofs to be checked by typesetting editing. No new material may be inserted in the text at the time of proof reading unless accepted by the Editor-in-Chief. Proofs should be returned within a week.

Page charges and reprints
There will be no page charges, except for color pictures which will be charged at their actual cost. The (contact) author will receive free of charge 30 reprints. Additional copies can be ordered on a reprint order form that will be sent with the page proofs and will be charged at current printing prices.

Copyright
Publication of an article implies the transfer of the copyright from the author to the publisher, by signing the "Transfer of Copyright" agreement after manuscript is received. Permission to quote from this journal with acknowledgement of the source is granted.